There is also a built-in function called truncate that will do what you want.

$ perl -Mstrict -Mwarnings -e '
> open my $fh, q{>}, q{rubbish} or die $!;
> print $fh qq{A longish line of text\n};
> truncate $fh, 0 or die $!;
> print $fh qq{Short\n};
> close $fh  or die $!;'
$ cat rubbish
Short
$

[download]

Update: Added example code.

Cheers,

JohnGG

In reply to Re^4: Empty File Contents before writing by johngg
in thread Empty File Contnts before writing by gautamparimoo

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